Term 2 Topic 1 Properties of materials IntroductionGreet the learners.Tell the learners that we use different materials in life that are made up of matter.Ask them to name a few materials and say what can be made from it.Possible answers [wool – jerseys; plastic – glasses; paper – envelopes; wood – furniture; leather – belts; etc.]Show them / let them show a few materials that they had brought from home.EnergiserShow Video Clip 1: 3C Materials song. [2:25 min.] or Video Clip 2: [1:55 min.].In this video the learners will be able to sing along, while different materials are shown. They will also see where it comes from and learn a few properties of the materials.Teacher Input 1Find out if they can identify the materials that were used to make their school uniform, the school building, their stationery, etc.Present an overview of physical properties of material by using Presentation 1: Physical properties of materials.Tell them that they must take note of the strength, flexibility, melting and boiling points of the various materials.Show Video Clip 3: Why have Valplast Flexible Denture? [2:25 min.] Or Show Video Clip 4: Handmade Sunglasses // Proof Eyewear. [2:15 min.].Ask the learners who usually wear sunglasses:Where do they buy it?Do they think it can damage their eyesight?Is it a fashion statement?Is it prescribed sunglasses?Find out what the learners know about dentures [false teeth].Learner Activity 1The learners explain what they found interesting and what they did not know.They also share what they know and have learnt about dentures and sunglasses. Let them state whether they would think twice before they wear any type of sunglasses.Complete Worksheet A: Physical Properties of materials.Teacher to use Worksheet A: Memorandum to mark the learners’ work.Teacher Input 2Inform the learners that they must pay attention to the property details of the video that they will be watching.They can also write down important facts, which they can share at the end of the video clip.Show Video Clip 5: [7:15 min.].Learner Activity 2The learners share the important facts that they had jotted down.They can investigate and compare the strength of materials by completingWorksheet B: Investigate and compare the strength of material.The teacher monitors the groups while they are testing different materials’ strengths.The learners are also reminded to work as a group and record their findings.Teacher to use Worksheet B: Memorandum to mark the learners’ work.Teacher Input 3Ask one of the learners to make a cup of tea. He / she must explain the steps. Listen carefully if they mention that the water must first boil.Now you can inform them about the boiling and melting points of a substance.Melting point: temperature at which a substance starts to melt. Water’s melting point is 0°C. Candle wax melts at 50°C.Boiling point: temperature at which a substance starts to boil. Water’s boiling point is 100°C. Large bubbles rise to the surface of the liquid as it changes to the gas state.Show Video Clip 6: Boiling Points Demonstration. [4:00 min.].Learner Activity 3Read important facts about boiling points on Worksheet C.Complete Worksheet C: Read the facts about the boiling and melting points of substances.Teacher to use Worksheet C: Memorandum to mark the learners’ work.If time allows, show Video Clip 7: investigation steps of Under Pressure: Boiling Water.Learner Activity 4Investigation steps are revised.Learners will do an investigation to see what happens when water heats up and boils as set out in Worksheet D: Investigate what happens when water heats up and boils.Teacher to use Worksheet D: Memorandum to mark the learners’ work.This can serve as a formal assessment task. [Marks can be adapted accordingly] By Administrator|2018-02-16T15:40:45+02:00February 16th, 2018|0 Comments Share This Story, Choose Your Platform! facebooktwitterlinkedinredditwhatsapptumblrpinterestvkEmail About the Author: Administrator Leave A Comment Cancel replyYou must be logged in to post a comment.